Hi, On Tue, 2013-09-24 at 11:29 +0200, Olivier Desport wrote: > Hello, > > I've installed a two nodes GFS2 cluster on Debian 7. The nodes are > connected to the datas by iSCSI and multipathing with a 10 Gb/s link. I > can write a 1g file with dd at 500 Mbytes/s. I export with NFS (on a 10 > Gb/s network) and I only can reach 220 Mbytes/s. I think that it's a > little bit far from 500 Mbytes/s... > > Do you how to tune my settings to increase the speed for NFS ? > > GFS2 mount : > /dev/vg-bigfiles/lv-bigfiles /export/bigfiles gfs2 > _netdev,nodiratime,noatime 0 0 > > NFS export : > /export/bigfiles > 172.16.0.0/16(fsid=2,rw,async,no_root_squash,no_subtree_check) > > mount on NFS clients : > nfs-server:/export/bigfiles /data/bigfiles nfs4 > _netdev,rw,user,nodiratime,noatime,intr 0 0 > One possibility is to try changing rsize and wsize at the client end. Is the 10G network used for NFS the same network as the one used for the iSCSI? I assume that the NFS is set up active/passive on the two GFS2 nodes, so only one node is exporting the GFS2 fs via NFS in the normal case? Steve. -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
